Integrated front light solution
US8654061B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2008 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Jun 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3466
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated illumination apparatus includes a light injection portion having a first end for receiving light from a light source. The light injection portion includes material that supports propagation of said light along the length of the light injection portion. Turning microstructure is disposed on a first side of the light injection. The turning microstructure is configured to turn at least a substantial portion of light incident on the first side and to direct the portion of the light out a second opposite side of the light injection portion. A slit is disposed along the length of the light injection portion. The slit forms an optical interface on the second opposite side of the light injection portion that provides total internal reflection for light propagating along the length of the light injection portion to be guided therein. The optical interface further transmits light turned by said turning microstructure. A light distribution portion is disposed with respect to the slit to receive the light turned by said turning microstructure and transmitted out of the second side of the light injection portion and through said slit. At least one bridge is disposed between light …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.